Changes to the U.K.โ€™s Financial Ombudsman Service, which enables consumers to pursue financial services firms for compensation for unfair treatment, will place greater weight on firmsโ€™ compliance. The changes have been prompted in part by the scandal surrounding poor-value car loans provided via dealers.

Ruth Prickett graduated from Cambridge University with a BA hons in History and has specialized in business and finance journalism for the past 20 years. She was editor of Financial Management, the magazine...